<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<form action="https://www.baidu.com/" onsubmit="return form_check()" >
<input type="text" onkeyup="reg_check(this)" >
<span id="result"></span>

<input type="submit" value="注册" >



</form>
<script type="text/javascript" src="jsday06.js"></script>

</body>
</html>